对移民有严格的限制。

There are strict limits on ___immigration.

聚会的目的是款待我的家人，因为我的移民到新西兰被批准了。

The purpose of the party is to give a treat to my family members, as my ___immigration into New Zealand is approved.

移民对一个国家既有积极也有消极的影响。

___Immigration can have both positive and negative effects on a country.